Router bit



FIG. 1 is a perspective view of the router bit and a cutout portion of a ceiling trim made thereby;

FIG. 2 is a bottom view;

FIG. 3 is a side view;

FIG. 4 is an end view; and,

FIG. 5 is a top view.

The broken line showing of partial ceiling trim is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a router bit, as shown and described. 